Effects of Cl on the reduction of supported PdO in ethanol/water solvent mixtures



Brazier, John B ORCID: 0000-0001-5471-3469, Newton, Mark A, Barreiro, Elena M, Parry, Stephen ORCID: 0000-0001-5205-4543, Adrio, Luis A, Mulligan, Christopher J ORCID: 0000-0003-1160-2202, Hellgardt, Klaus ORCID: 0000-0002-4630-1015, Hii, King Kuok Mimi ORCID: 0000-0002-1163-0505, Thompson, Paul BJ, Nichols, Rachel
et al (show 1 more authors) (2017) Effects of Cl on the reduction of supported PdO in ethanol/water solvent mixtures. Catalysis, Structure & Reactivity, 3 (1-2). pp. 54-62.

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Abstract

The reduction of γ-Al2O3-supported PdO in flowing aqueous ethanol was investigated. Quick EXAFS (QEXAFS) performed at the Pd K-edge reveals that the presence of Cl can have a profound effect on the reduction process. At low loadings of Pd (1 wt-%), the size dependency of the process is inverted, compared to Cl-free samples. The extent of reduction was found to be dependent on loading/particles size. It is shown, using in situ QEXAFS at the Cl K- and Pd L3-edges, that residual Cl is not removed by the flowing solvent mixture, even at an elevated temperature of 350 K. The origins of these behaviours are discussed in terms of the differing effects that Cl may have when bonded to oxidic or reduced metal centres and the results were compared to earlier observations made on the effects of Cl on commercial polyurea encapsulated Pd ENCAT™ NP 30 catalysts.

Item Type: Article
Uncontrolled Keywords: 3402 Inorganic Chemistry, 40 Engineering, 34 Chemical Sciences
Depositing User: Symplectic Admin
Date Deposited: 11 Feb 2019 14:47
Last Modified: 21 Jun 2024 03:21
DOI: 10.1080/2055074x.2016.1267296
Open Access URL: https://www.tandfonline.com/doi/full/10.1080/20550...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3032661